1 // SPDX-License-Identifier: GPL-2.0-only
8 #include <linux/property.h>
10 #include <linux/string.h>
16  * zl3073x_pin_check_freq - verify frequency for given pin
62 	dev_warn(zldev->dev,  in zl3073x_pin_check_freq()
69  * zl3073x_prop_pin_package_label_set - get package label for the pin
75  * Generates package label string and stores it into pin properties structure.
78  * REF<n> - differential input reference
79  * REF<n>P & REF<n>N - single-ended input reference (P or N pin)
80  * OUT<n> - differential output
81  * OUT<n>P & OUT<n>N - single-ended output (P or N pin)
110 	snprintf(props->package_label, sizeof(props->package_label), "%s%u%s",  in zl3073x_prop_pin_package_label_set()
114 	 * string.  in zl3073x_prop_pin_package_label_set()
116 	props->dpll_props.package_label = props->package_label;  in zl3073x_prop_pin_package_label_set()
120  * zl3073x_prop_pin_fwnode_get - get fwnode for given pin
126  * Return: 0 on success, -ENOENT if the firmware node does not exist
137 		node_name = "input-pins";  in zl3073x_prop_pin_fwnode_get()
139 		node_name = "output-pins";  in zl3073x_prop_pin_fwnode_get()
142 	pins_node = device_get_named_child_node(zldev->dev, node_name);  in zl3073x_prop_pin_fwnode_get()
144 		dev_dbg(zldev->dev, "'%s' sub-node is missing\n", node_name);  in zl3073x_prop_pin_fwnode_get()
145 		return -ENOENT;  in zl3073x_prop_pin_fwnode_get()
163 	props->fwnode = pin_node;  in zl3073x_prop_pin_fwnode_get()
165 	dev_dbg(zldev->dev, "Firmware node for %s %sfound\n",  in zl3073x_prop_pin_fwnode_get()
166 		props->package_label, pin_node ? "" : "NOT ");  in zl3073x_prop_pin_fwnode_get()
168 	return pin_node ? 0 : -ENOENT;  in zl3073x_prop_pin_fwnode_get()
172  * zl3073x_pin_props_get - get pin properties
179  * generates package label string according pin type and optionally fetches
202 		return ERR_PTR(-ENOMEM);  in zl3073x_pin_props_get()
206 		props->dpll_props.type = DPLL_PIN_TYPE_EXT;  in zl3073x_pin_props_get()
207 		props->dpll_props.capabilities =  in zl3073x_pin_props_get()
211 		props->dpll_props.type = DPLL_PIN_TYPE_GNSS;  in zl3073x_pin_props_get()
214 	props->dpll_props.phase_range.min = S32_MIN;  in zl3073x_pin_props_get()
215 	props->dpll_props.phase_range.max = S32_MAX;  in zl3073x_pin_props_get()
224 	/* Look for label property and store the value as board label */  in zl3073x_pin_props_get()
225 	fwnode_property_read_string(props->fwnode, "label",  in zl3073x_pin_props_get()
226 				    &props->dpll_props.board_label);  in zl3073x_pin_props_get()
228 	/* Look for pin type property and translate its value to DPLL  in zl3073x_pin_props_get()
231 	if (!fwnode_property_read_string(props->fwnode, "connection-type",  in zl3073x_pin_props_get()
234 			props->dpll_props.type = DPLL_PIN_TYPE_EXT;  in zl3073x_pin_props_get()
236 			props->dpll_props.type = DPLL_PIN_TYPE_GNSS;  in zl3073x_pin_props_get()
238 			props->dpll_props.type = DPLL_PIN_TYPE_INT_OSCILLATOR;  in zl3073x_pin_props_get()
240 			props->dpll_props.type = DPLL_PIN_TYPE_SYNCE_ETH_PORT;  in zl3073x_pin_props_get()
242 			dev_warn(zldev->dev,  in zl3073x_pin_props_get()
248 	props->esync_control = fwnode_property_read_bool(props->fwnode,  in zl3073x_pin_props_get()
249 							 "esync-control");  in zl3073x_pin_props_get()
251 	/* Read supported frequencies property if it is specified */  in zl3073x_pin_props_get()
252 	num_freqs = fwnode_property_count_u64(props->fwnode,  in zl3073x_pin_props_get()
253 					      "supported-frequencies-hz");  in zl3073x_pin_props_get()
255 		/* Return if the property does not exist or number is 0 */  in zl3073x_pin_props_get()
260 	 * So read the frequency list into temporary array.  in zl3073x_pin_props_get()
264 		rc = -ENOMEM;  in zl3073x_pin_props_get()
269 	fwnode_property_read_u64_array(props->fwnode,  in zl3073x_pin_props_get()
270 				       "supported-frequencies-hz", freqs,  in zl3073x_pin_props_get()
276 		rc = -ENOMEM;  in zl3073x_pin_props_get()
281 	 * filter-out frequencies that are not representable by device  in zl3073x_pin_props_get()
293 	props->dpll_props.freq_supported = ranges;  in zl3073x_pin_props_get()
294 	props->dpll_props.freq_supported_num = j;  in zl3073x_pin_props_get()
296 	/* Free temporary array */  in zl3073x_pin_props_get()
304 	fwnode_handle_put(props->fwnode);  in zl3073x_pin_props_get()
311  * zl3073x_pin_props_put - release pin properties
319 	kfree(props->dpll_props.freq_supported);  in zl3073x_pin_props_put()
322 	if (props->fwnode)  in zl3073x_pin_props_put()
323 		fwnode_handle_put(props->fwnode);  in zl3073x_pin_props_put()
329  * zl3073x_prop_dpll_type_get - get DPLL channel type
341 	/* Read dpll types property from firmware */  in zl3073x_prop_dpll_type_get()
342 	count = device_property_read_string_array(zldev->dev, "dpll-types",  in zl3073x_prop_dpll_type_get()
345 	/* Return default if property or entry for given channel is missing */  in zl3073x_prop_dpll_type_get()
354 	dev_info(zldev->dev, "Unknown DPLL type '%s', using default\n",  in zl3073x_prop_dpll_type_get()